Sewing-machine.



A. A. MERRITT.

SEWING MACHINE. `APPucATsoN FILED uw 21.1916.

ARTHUR il.. BIERRTT, 0F WORCESTER, MASSACHUSETTS,

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liggvw speca'm 0f 'lels Patent llbatented Application led July 21, 1916..Serial No. 110,550.

To all whom t may concern.'

Be it known that l, ARTHUR A. Mnnnir'r, a citizen of the United Statesorn America, and aresident of Vv'orcester, lllassachusetts, haveinvented a new and useful improvement in SeWing-Machines, whichinvention is fully set forth in the following specification.

This invention concerns the adaptation to the production f a felled seamof the type of machine commercially known as the Willcox & Gibbs Co.Flatlock machine,7 shown for example in Merritt .Patent No. 1,041,652,dated October 15, 1912; and more particularly this invention has as itsobject the mounting of the folder at the 'treo end of the work-arm, in amanner enabling it to be readily swung aside from its operative positionin front ot the needlesto give access to neighboring' parts of themechanism. As well-known, a felled seam is one in which twoii'iterl'olded et ges of fabric, brought into that relationship bypassing through a folder, are secured together by two parallel rows ofstitches. @ne common and extensive instance of use yof the felled 'seamis in niens linen shirts.

What is now believed to be the preferred embodiment of the invention isillustrated in the accompanying drawing, wherein- Figure 1 is a planview showing the folder in operative position in l'ront of the needles;

.feed-otlthearm work-arm of the kind more fully disclosed in the Merrittpatent aforesaid; it includes a. removable cover portion 11 having anopening covered by cloth-plate er throat plate 1Q held in place byscrews 13, 13. The parts acting upon the' work above the cloth-plateinclude a plain hinged presser-foot 19 ulcrumed at 20 to footshank 16,the movement of the foot being limited by stop-pin 21 working in saidshank. Foot-shank 16 is secured to the lower end of presser-foot bar 17.1 and l are two eye-pointed needles working through suitable slots inthe presser-toot,

and cloth-plate, ,and carried by needle-har (F ig. 3). Y

3U is a folder oit' a type weithin i market for interioiding edges Uric;includes a base-plate having slots through which screws secure the'folder to the horizontal arn'i ot a swinging carrier 'lhe slots inbase-'plate 31 provide for ad- ]ustment ot the folder tonf'ard and fromthe needles. Carrier hinged at one end on a pin 35 extending betweenlugs 36, formed on the rear-side ol work-arm rlfhe carrier 3l, its scket at one end tor the hinge pin 35, and the horizontal extension arin353 at other end, are preferably formed in one piece by shaping andbending a singl i piece of sheet-metal. lisfhen in normal ope 'ativeposition, the folder. and its swinging carrier stand in 'the positionshown in lfig. 1 with the `fold r in 'front Yn in the of the needlesanc'. he arm il?, lit in a recess ii' ot cover the parts bonut securedin this position by a latch 2li sliding in a plate 38 and retained inthe plate by a stop screw projecting into a slot oi the latch.

.llfhem for any reason, it is desirable to at the presser-toot, or toreniovc the clothplate for access to parte thereunder. latch 37witlidravfn and the carrier 34 with :tolder 30 swung aside. as shown inFig. 'lhe parts operating in the worknarni and beneath the cloth-plate,and as to which no patentable novelty is claimed herein, aresubstantially the saine as corresponding parts in my aforesaid lv r 'ittlateni. No. 1,041,652 (see particularly sheet of the drawings), dated insterhout latent No. 1,134,483, dated April l5, 15515, except fordil'erences herein mentioned. 40 is the looper lever, only the outer endot which is shown; looper carrier 41, pivotally mounted thereon by api.vot-scrcw 4t2., carries two loopers 43, one for each-oi the twoneedles 1 and 1a. @lily one looper 43 is shown, Fig. 3. In the patentsaforesaid, there are four needles and tour loopers. Looper-lever 40 `ts,and is longitudinally movable, in a dee transverse recessin acylindrical block 44 (Fig. which is seated. and rotatable in a circularrecess in the. bottoni, wall of the work-arn'l-see sheet 19 of thedrawings of the aforesaid Merritt patent. The loopei`- lever is given alongitudinal movement a fl a turning movement about the 'lulcruin videdby the rotatable bloeit 44, both ported by a bracket-arm 4&8.' i roller49 on tail-piece 4:6 engages cani-groove a part 50 secured to theleopard-ever a0, and thereby movement ot the latter imparts sidewiseswinging movement to the loop-spreader about its nivot 47. The paths ofmovement imparted -to the loopeis and loop-spreaderdiiter somewhat from'the paths o1? movement in the structures of the patents aforesaid,because the present structure )reduces two pai-- allel rows of Groverand Baker stitches, with no crossing of threads between rows, as in theseams produced by the structures of said patents.

ln said patents9 two diiiferentially operating feed-members are shown;one a fallingfeed, and the other a. stitch-feed. ln the presentinstance7 only a stitch-feed member y 60 is used. 'it is secured to andcarried by a feed-har or lever 6l, onlyY the outer end of which is shownin Fig. 3.

in conjunction with the mechanism shown and described, prefer to employtake-up moans for the loopeitliieads such as disclosed in the pendingapplication of Garrett E. Usterliout, Serial No. T27 ,180, filed @ctober23, 1916.

Villiat claim is:

l. .ln a sewing machine, the combination with a Work-arm having` a treeend, of stitch-forming mechanism operating at said free end of thework-arm7 a folder-carrier ositioned along one side of said tree end ofthe Work-arm and having a horizontal extension lying across the top ofthe workarm, a folder attached to said horizontal extension and normallypositioned in afl- 'vance oit the stitch-forming mechanism, and ahinge-connection securing said carrier to insegne? the Work-arm and onwhich. said: carrier is adapted to be swung to shiftthe folder from itssaid normal position to an out-ofthe-Way position removed trom thestitchforming mechanism.

2. ln a sewing machine, the combination With a Work-arm having a freeend, oitv with a Work-arm having a free end7 ofv stitch-formingniechanisniioperating at said tree end of the Work-arm, a folder-carrierpositioned along one side of said free end of the work-arm and having ahorizontal extension positioned in a recess in the top of the work-arm,a folder attached to said horizontal extension and normally7 positionedin advance of the stitch-forming mechanism, a hinge-connection having anupright axis securing said carrier at one end to the work-arm and onwhich said carrier is adapted to be swung to shift the folder from itsnormal position to an .outoit-the-way position removed from thestitchforming mechanism, and a detent at'the other end ot' the carrierholding the saine in normal position and adapted to release the carrierto swing on its hinge;

ln testimony whereof have signed this speciication.

` A.RlHUR A. MERRlTT.

